Precision Reflex M84 Gas Buster Charging Handle Ambidextrous Original Latch Flat Dark Earth. PRi Gas Buster charging handle is constructed of T7 7075 hard coat black anodized aluminum with a steel latch. Handle does not work on Rock River 308s. Specifications for Precision Reflex Gas Buster Charging Handle: Manufacturer: Precision Reflex Finish: Hard Coat Anodized Fabric/Material: T6 7075 Aluminum Gun Make: AR Platform Gun Model: M16 AR-15 Hand: Ambidextrous Length: 6.875 in Package Contents: Precision Reflex Gas Buster Charging Handle What firearm models does the manufacturer say Precision Reflex Gas Buster Charging Handle is compatible with? The manufacturer suggests that Precision Reflex Gas Buster Charging Handle is compatible with AR-15 M16Precision Reflex 05-2031-DE: M84 Gas Buster Charging Handle Ambidextrous Original Latch Flat Dark Earth